The point that I was trying to make before, which I guess I need to make clearer, is that there are two things that occur after the stolen monster is flipped face down. One is that
Snatch Steal is destoried by game mechanics, and the other is that the status of the stolen monster needs to be determined.
If the status of the stolen monster was to be determined first, the it would return to its original controler, and then
Snatch Steal would be destoried via game mechanics, and this this disscussion would not be revelant.
That said, lets assume that after the monster is flipped face down, that
Snatch Steal is destoried via game mechanics first. This rasies the question of what the status of the face down monster will become.
Digital Jedi said "There is no effect keeping the face-down monster on the new controler's side of the field. There is no effect that will return the face-down monster to the opponent's side of the field."
This of course assumes that an effect is needed to return the monster to its original owner. Since monsters do not exist on you opponet's side of the field without a card effect that allows them to be so (either its own, or another card's effect), I would argue that no effect is needed, rather the monster would return to its original owner by defualt since there is no effect telling it to be on your opponet's side of the field (I believe that this is what is going on with
Snatch Steal Vs Stirke Ninja since
Strike Ninja first appears on the side of the field of the person who stole it and the returns to its original owner). Why would such an effect be needed if the monster stolen was flipped face down?
I also wish to know how a monster "forgets" who it belongs to. If I were to you
Remove Brainwashing on such a monster, wouldn't it return to the control of its original owner? Since (in the vast majority of cases), the monster stolen originally belonged to its original owner, and
Remove Brainwashing would work return it to its original owner, the monster could not forget who that was, or else
Remove Brainwashing wouldn't work on it.
Also, if the stolen monster "forgets" who it belongs to when it is flipped face down, then why doesn't it "forget" who it belongs to if it is removed from play for a turn and brought back? In both cases
Snatch Steal was destoried by game mechanics, so why do we have two different results?